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DLP5530PGUQ1EVM: low contrast

hui_zhu
Prodigy 90 points
Part Number: DLP5530PGUQ1EVM
Other Parts Discussed in Thread: DLPC230-Q1

we use only R or G or B LED drivered by DC power，this module show low contrast. It show a  rectangular spot when input a black picture(only use G led) , This doesn't seem to be an optical issue, it could be a setup or drive issue.Could you please tell me how to solve it,Thank you.

  • 0
    TI__Expert 3045 points

    Hi Zhu,

    Can you clarify what is meant by low contrast?  Are you measurement ANSI checkerboard contrast or Full-on / full-off contrast?

    What is the mode of operation?  This EVM can be dimmed by a very wide range (16 bit steps) and has 5000:1 dimming range.  What conditions is this low contrast being shown?

    Do you have the Automotive control program downloaded?  

    Jason

  • 0 in reply to Jason Thompson
    Prodigy 90 points

    Hi Jason，

    We used Full-on / full-off contrast. We used  DLPC230-Q1 Control Program Lite to show a black ppt as pic show in this question. All setting is original, we use only R or G or B LED drivered by DC power not by Illumination Driver PCB. Is the low contrast due to dimming range?  How to set the dimming range? Where can we get the help-manual for DLPC230-Q1 Control Program?

    We don't download Automotive control program. Where can we download it?

  • 0 in reply to hui_zhu
    TI__Prodigy 70 points

    Please contact DLP China as we contacted you last year.